GitHub Image Preview is a Chrome extension designed by ghostcode521. This free tool falls under the Browsers category, specifically the Add-ons & Tools subcategory. It enhances the GitHub repository experience by providing a preview of big images directly in the repository readme. This feature allows users to conveniently view images without the need to download them or navigate away from the repository page.

The extension simplifies the process of previewing large images on GitHub, making it easier for users to get a quick overview of the visuals included in a repository. With GitHub Image Preview, users can save time and effort by seamlessly browsing through image content directly within the repository readme.